Valve arrangement for controlling fluid transmission-gears.



n. LBNTZ. VALVE ABBANGBM'ENT BOB' OONTBOLLING FLUID TRANSMISSION BEARS.

LPPLIOLIIGI FILED SEPT. 1, 1909.

Patented 1560.27

3 SHEETS-SHEET 1.

HUGO r 4 x Attornqf H. LENTZ. VALVE BBAN,GBME'N'I FOB, UONTROLLING FLUID .TRANSMISSION BEARS. vMf'PLmMIollsr rILnn snm'. 1, 1909.- 4 A 980,106,i Patented Dec. 27, 1910.

' a-'snBnTs-snnm 2.

H. LENTZ. l vALyI: ABBANGB'M'EM Polal coN'rnoLLING FLUID 'musmsslou amas.'

APPLIOATIIOR FILED szzr'r. 1, 1909-.

Patented De'c, 27, 1910.

3 SHEETS-SHEET 3.

Illyll e fl.

: e i a y x-NVENTOR H ocio LENTI/5,;

WITNESSES;

" asoma To all 'it #nay concern:

tim-afm).sTATEsPArE-NT onirica.

l :HUGO LEN'rz, 'or MANNHEIM, GERMANY.

`vhilvgv'.,y'.aminifieiiiiuiitri Fon coN'rnoLLING FLUID .TRANSMISSION-MARS.

Specification' of Letters Patent.

Patented Dec. 2v, 1910.4

Application nien september 1,1909. ser'iai No. 515,704.

71? /Be it known that' I, HUGO -Lii'is rz, la sub- I .'-jectrofthe German Emperor, and residing at ,Mannhe1m',' Germany, have invented a:

new4 and useful .Valve Arrangement lfor -Controlli'ng Fluid Transmission-Gears; and I flo-hereby declare .thel following -tobe a 'i full,` clear, and exa'otdescription o1` the saine. in,

- any desired speed, of one ormore of the A The present invention `relates to valve arrangements -which Apermit the operation, yat

i pressuremotors `especially for driving a' )motor car, the braking of said motors, the

v`stoppage of fthe-same, or the 'reversal of direct-ion of driving thereof.v .I

' shown a piston poses mentioned.

In the raccompanying drawings, have fFigu'rell shows in lsectionI the'valve and y yalve casing and also (diagrainmatically) the pressure pumps and 'the motors, the

-valve being in position to operate the pumps at high speed; Fig. '2 indicates a section at i the line A'-'B of Fig. l.; Fig.3 indicates lthe'shifting of-the valve to'drive the motors -at halfs eed;"F.ig`. 4 indicates the positionV :ofthe va ve to-brake thefmotors; Fig. 5 in 'dientes 4the valve` l,in position'to cut out the motors; and Fig.l 6 indicatesv the position of the valve to reverse the motors.`

The valve has a hollow body a, is open .one end.and, at the other end, is adapted to connect with a valve-rod (not shown).y At `oneteiid, the' valve has a broad working face 11.1(F1gr1.) havin ,a'series of openings ban' 'second series' c, t elatt-er being formed in a flange, while the former communicatewith the interioror chamber of' the valve.' At its oth`er1(tlie o en) end, theI piston valve is provided-.with ange having a Working face ,'(e) of small-'.width, and segmental pieces (f,

f, vFig. 2) ,4 of." like diameter, are connected 7 sides of the Working face of the valve. .The

segmental pieces, f, when the valve is in a,

The. valve-casing (g), Vwhich may beof anysuitableconstructiom is shown as provied with,"poris,.1,`11, 111,1v and v. 1n

the last-named port (V), which is compara;

tively wide, two additional .separate con-v necting chambers (h, z', Fig. 2) are formed, b means of bars 7c, for connecting opposite desired positi0n,.close the passager with the exceptionI of' the connecting chambers hand z'. The valveis adapted to he shifted lengthvalve, useful for the pu1'. y.

y ing.

,of t-hemotors), `sothat no back-pressure on the lump piston 1s caused.

.bers- It and i formas wise of its casing. In one position (Fig. 1),'

the port is in communication (by open'- ings b) .with the-interior of .the valve, the poit Il 1s closed hy the broad flange, while the-ports III, IV and V are u'ninterrupted.

In another position (Fig. 3), the port I is closed and the port II is opened by coni-V munication with the 'opening c of the broad flange.. i

The primary pumps, of yany suitable conf struction, are 'shown at Z and m, and the motors are'shoi'vn at n and o.

In the first position of thevalve (thatof lFig. 1), the transmission fluid is forced'by the prima-ry pumps into the pressure port -I V, passesto port III, and thence to Ithe mot-ors fn, and 0, which thus run single act- Tlie course of theliquid is indicated in the drawingsI in full lines y. Fluidescapingv from the motors, along the dotted line .e is conveyed to 'the return poit V, a small part s 'of it being drawn' out through apertures b and the port I (the second inlet lien the valve is pushed into the position shown in Fig..3, -a portion of the pressure fluid also asses through the aperture c into the port Ii) and'thus reaches the secondinlet y in the motors. The circulation roduced. in'the first position of the valve by' the nio,-

tors, isl interrupted as the apertures b are covered. The motors now. runat half speed, because the quantity of pressure fluid 'is divided` and comes into operationat two places y'and y". L p In the third iosition .off the piston valve y, 'j as in the previous position', but. after uitting the motors and on passing through by means ofI theseiarate connecting cham. in the port VL" The position of the'valve, for-.reversing `a (Fig. 4), the' u id .follows .thesame course v 5 It e passage V itl z'is throttled, as only a riniary y.pumps is enabled to describe a close course the motors, is shown in 'Fig'..: The conneetion between the chambers-hand and the return pipe is interrupted bytheend e ofthe valve, so that the Huid y' is forced to ioW through the port V to the motors. The

through the notches p into the left hand hollow-chamber of the valve a from whence it flows through the apertures s pro vided in the vert-ical wall 1 into the right lhand chamber of the valve and thus to the primary pumps; another portion .a of the uid flows through the passage IH and the "openings b to the primary pumps.v

That I claim is:

1. In a device for controlling the speed, braking, and 'reversing of motors, the Com. bination with the motors of a valve easing provided with vports, connected with the motors, a hollow piston valve, open at one end and having Working -fiac'es at each end, slidably mounted in said casing, the working face a't lthe open 'end being provided with segmental pieces for throttlmg la port of thep,

casing, the working face of the valve at the closed end having openings for connecting the hollow interior of the valve with a port of the casing, and also having openings forl lconnecting the exterior of the valvev with a port in the casing.

2. A hollow piston valve open `at one-end, said end having a Working face provlded with segmental pieces, the closed end of the valve having a working face, and a iange,l

over-hanging the exterior of the valve, 0penings being provided in the last-'mentioned working face and in the flange.

.In testimony whereof, l havehsigned my name to this speeifieationin the presence of two subscribing witnesses.

HUGOLETZ.

` Witnesses:

C. FRANZ, y ERNEST L. vns, 

